1. Introduction

2. Empirical Regularities 2.1 Long-Term Trends
2.2 Cross-Sectional Differences

3. The Model 3.1 Basic Assumptions
3.2 Relation between Energy demand and Durable Consumption Goods stock : Sensitivity of Energy Demand to Income Growth
3.3 Income Elasticity and Energy Demand Growth Pattern

4. A. Concluding Remark